Matthew Dillon created DragonFly BSD from FreeBSD 4.8 code in 2003. Matthew Dillon was formerly a part of the FreeBSD community. Dillon disagreed with FreeBSD 5's approach to SMF. Many were disappointed with the performance and stability FreeBSD 5's early releases.[4][5][6][7][8] Dillion split from the FreeBSD project in order to develop the FreeBSD 4 series in the direction he felt was best.[9][10][11]